4 Reasons Runners Should Count Contact Hours, Not the Thickness of the Balm
You will argue about two per cent energy return in a shoe. Here is a number worth the same attention, and nobody has put it on a page before.
You will happily argue about a two per cent difference in a shoe's energy return. Here is a number worth the same attention.
Two easy weeks. If it has done nothing, keep all of it and we refund you. Overnight kit, not for running in.
1. A technical sock is engineered to move moisture off skin
That is the whole spec. It is why you pay twenty pounds for one, and it does not switch off because you put balm on first.
2. So the honest contact time under merino is about twenty minutes
After that it is a sock with grease in it and a callus drying out again.

| Balm under a technical sock | Balm under a Solen Base Day Sock |
|---|---|
| About twenty minutes, then the sock has it | Held against the callus overnight |
| Wicking ruined, sock retired | Washes out at 40 |
| Callus dries back out by morning | Stays pliable |
Two easy weeks. If it has done nothing, keep all of it and we refund you. Overnight kit, not for running in.
3. Change the layer, keep the tub
Bonded silicone across the whole footbed. Same balm you already own, a full night of contact.

4. Nothing else in the routine changes
Balm on, sock on, sleep. Overnight kit, not for running in.
How it works
- Balm on after the run or before bed.
- Day Sock over it.
- Morning: off, mesh bag, wash at 40.
The offer
-
One pair · £25
try it through a training week -
3 pairs · £55
Most chosen · one on, one in the wash, one spare · Night Sleeve and mesh wash bag free -
5 pairs · £89
a full season and a spare set
Why now: start it in the next easy block, not race week.
Two easy weeks. If it has done nothing, keep all of it and we refund you. Overnight kit, not for running in.
Free UK delivery · No subscription · Machine washable at 40 · Working life 3 to 6 months
A textile accessory, not a cosmetic or a medical device.
Same cream. Fourteen nights. A sock that cannot drink it.
Shop the kit — from £25